JPH0424895B2 - - Google Patents

Info

Publication number
JPH0424895B2
JPH0424895B2 JP57140508A JP14050882A JPH0424895B2 JP H0424895 B2 JPH0424895 B2 JP H0424895B2 JP 57140508 A JP57140508 A JP 57140508A JP 14050882 A JP14050882 A JP 14050882A JP H0424895 B2 JPH0424895 B2 JP H0424895B2
Authority
JP
Japan
Prior art keywords
frequency
test system
voltage
circuit
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP57140508A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5882170A (ja
Inventor
Gadona Misheru
Kasutoreeru Joeru
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of JPS5882170A publication Critical patent/JPS5882170A/ja
Publication of JPH0424895B2 publication Critical patent/JPH0424895B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/301—Circuit arrangements at the subscriber's side of the line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Locating Faults (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
JP57140508A 1981-08-14 1982-08-14 ２導体式回線の短絡および開放を検出する試験システム Granted JPS5882170A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8115722A FR2511511A1 (fr) 1981-08-14 1981-08-14 Systeme de localisation de boucles et d'ouvertures dans une ligne bifilaire
FR8115722 1981-08-14

Publications (2)

Publication Number Publication Date
JPS5882170A JPS5882170A (ja) 1983-05-17
JPH0424895B2 true JPH0424895B2 (enrdf_load_stackoverflow) 1992-04-28

Family

ID=9261470

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57140508A Granted JPS5882170A (ja) 1981-08-14 1982-08-14 ２導体式回線の短絡および開放を検出する試験システム

Country Status (6)

Country Link
US (1) US4528427A (enrdf_load_stackoverflow)
EP (1) EP0072721B1 (enrdf_load_stackoverflow)
JP (1) JPS5882170A (enrdf_load_stackoverflow)
CA (1) CA1191553A (enrdf_load_stackoverflow)
DE (1) DE3267282D1 (enrdf_load_stackoverflow)
FR (1) FR2511511A1 (enrdf_load_stackoverflow)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175403B (en) * 1985-05-14 1989-07-12 Motorola Inc Telecommunication systems
US4991105A (en) * 1988-12-21 1991-02-05 Accu-Scan, Inc. Microprocessor controlled ground system monitor
GB8914898D0 (en) * 1989-06-29 1989-08-23 Radiodetection Ltd Improvements relating to cable fault tracing systems
ATE169438T1 (de) * 1991-08-29 1998-08-15 Cirte Manifatturiera Spa Zwischentrennvorrichtung für fernsprechleitung
DE19643014C1 (de) * 1996-10-18 1998-08-13 Telefunken Microelectron Bussystem zur elektronischen Energieversorgung
EP0961467A1 (en) * 1998-05-27 1999-12-01 Porta Systems Corporation Apparatus and method for testing a telecommunications system
US6292541B1 (en) * 1998-11-10 2001-09-18 Pittway Corporation Line shunt and ground fault apparatus method
US6389110B1 (en) * 2000-01-24 2002-05-14 Agere Systems Guardian Corp. Telecom service identification resonator apparatus and technique
FR2835382B1 (fr) * 2002-01-31 2005-02-25 Electricite De France Dispositif de controle a distance d'une ligne filaire de telecommunication
US7502587B2 (en) * 2004-05-28 2009-03-10 Echostar Technologies Corporation Method and device for band translation
US8132214B2 (en) 2008-04-03 2012-03-06 Echostar Technologies L.L.C. Low noise block converter feedhorn
US9771823B2 (en) * 2014-06-26 2017-09-26 General Electric Company Power generation system control following transient grid event
CN109813992B (zh) * 2017-11-21 2021-04-27 英业达科技有限公司 连通性测试方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843848A (en) * 1973-01-12 1974-10-22 Magnetic Controls Co Telephone looptest system
US3912882A (en) * 1973-12-07 1975-10-14 Tm Systems Remote loop-back terminating unit for testing telephone
US4041255A (en) * 1976-09-29 1977-08-09 Northern Telecom Limited Switching circuit for telecommunications lines
US4054759A (en) * 1976-11-15 1977-10-18 Northern Telecom Limited Subscriber loop verification device and method
JPS5635545A (en) * 1979-08-31 1981-04-08 Fujitsu Ltd Faulty area detecting system for relay transmission line
FR2498334A1 (fr) * 1981-01-21 1982-07-23 Gabry Andre Installation de localisation de coupures et de courts-circuits dans une ligne bifilaire

Also Published As

Publication number Publication date
EP0072721B1 (fr) 1985-11-06
FR2511511B1 (enrdf_load_stackoverflow) 1983-12-30
FR2511511A1 (fr) 1983-02-18
JPS5882170A (ja) 1983-05-17
US4528427A (en) 1985-07-09
EP0072721A1 (fr) 1983-02-23
DE3267282D1 (en) 1985-12-12
CA1191553A (en) 1985-08-06

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